She's been a great sleeper for awhile; we did the family bed for a good year and a half, and then she went to the crib on her own. Last week or so, she demanded to "come back to bed" so I let her, but today my husband put her toddler bed together, and she's in it!

Her room is as safe as its' going to get for now, and I have the gate in front so she can't wander outside for a walk in the woods, but I'm STILL nervous that she's going to get hurt or something

We just bought a twin for DS yesterday! We tried to put his crib mattress on the floor a couple months ago, but it didn't work out. He was sick at the time though, and really restless, so he had a hard time staying on it
Last night I was worried I would be up and down all night, but he didn't make a peep for 12 hours! Woohoo! I hope your transition is smooth also.
Now lets see how naptime goes... it sounds quiet in there....